Control System and Control Method for Automatic Adjustment of Outdoor LED Display Brightness

摘要

The paper involved a control system and control method for automatically adjusting the outdoor LED display screen brightness. The control system includes outdoor LED Display, test module, the optical system which was collect emitted light and reflect Light, a light sensor, a signal amplifier, analog to digital conversion control, LED display brightness automatic control system. The outdoor LED display controlled by LED display; the optical system which was collect emitted light includes a hood and fixed focus lens, fixed focus lens; the test modules controlled, scanned and drived by LED display; the hood is used to shield unwanted ambient light, fixed focus lens video test module emit light to the light sensor, the light sensor convert an optical signal into an electrical signal and amplified by the signal amplifier and the analog signal which amplified by the signal amplifier was sent to the digital converter and turned into the corresponding digital signals and was sent to the LED display brightness automatically control system and then achieves automatic brightness adjustment.